Telegraphic transmitter



(No Model.) 2 Sheets-Sheet 1.

N. J. BISHOPRICK.

TELBGRAPHIG TRANSMITTER.

No. 299,949. Patented June l0, 1884.

liwwfm mma Y @@YW (No Model.) 2 Sheets-Sheet 2.

N. J. BISHOPRIGK.

TBLBGRAPHIG TRANSMITTER. No. 299,949. PatentedJune l0. 1884.

PATENT Ormes.

NICHOLAS J. BISHOPRIOK, OF BROOKLYN, NEW YORK.

TELEGR'APHIC TRANSMITTER.

SPECIFICATION forming part of Letters Patent No. 299,949, dated June 10,1884.

Application filed October 4, 1883. (No model.)

To all whom, it may concern.-

Be it known that I, NICHOLAS J. BIsHor- RICK, a citizen of the UnitedStates, residing at Brooklyn, in the county of Kings and State of NewYork, have invented a certain new and Improved Method of Transmitti ngTelegraphie Messages, of which the following is a full, clear, and exactdescription.

The object of this-invention is to simplify to the method of sending thetelegraphic symbols for the letters of the alphabet, numerals,punctuation-marks, and the like,whereby the labor of transmissionincident to the old method is largely diminished,and the inconvenienceand I 5 damage entailed by mistakes on the part of the sender arereduced to a minimum, mistakes being almost entirely, if not altogether,rendered impossible.

In my invention the characters are arbitrarily transmitted withoutdependence upon sound, and are received on any suitablereceiving-instrument, such as a sounder or Morse printing-instrument.

M y invention consists in a machine for electrically transmittingtelegraphic symbols or characters previously prepared, and comprisesrotary contact surfaces moving in opposite directions, 'and suitablyinsulated from one another,and arranged in an electric circuit,com

` 3o bined with mechanism operable at Will to bring in contact withsaid` surfaces movable types or blocks containing the saidpreviouslyprepared characters or symbols, the active surfaces of whichare electro-positive to the rotary contact-surfaces, whereby theVcharacters or symbols on such types or blocks are electricallytransmitted, substantially as hereinafter specified and claimed. In theaccompanying drawings, in the sev- 4o Y eral figures of which like partsare designatedby similar letters of reference, Figure lis a rearelevation of a machine embodying my invention, with part of thetype-hopper broken away. Fig. 2 is a side elevation thereof. 45 3 is avertical cross-section on the plane of the line .r x, Fig. l. Fig. 4t isavertical section, on a larger scale,of a part of the type-hopper andone of the type-operating devices, and Fig. 5 is a face view of one ofthe types on the same 5o scale.

On a suitable base, A, I arrange standards B, in which are formedbearings a b for the l shafts c d of rollers G D. These rollers G D areof material conductive of electricity, and are geared to move inopposite directions by toothed Wheels ef, the shaft c receiving, ifdesired, the driving-power, as a pulley, g, or a crank or otherpower-transmittin g or given device. The shaft c of the roller C isarranged in insulated bearings, and the gear-wheel e of said roller isalso insulated, and said roller is grounded through 7L. The roller D hasthe bearings b for its shaft d, horizontally elongated to permit saidroller to' move to and from the roller C, but said roller is held nor-Vmally in its nearest position to the roller C by springpressedfollower-blocks i. lThe linecurrent proceeds from the roller C.

Above the rollers O D, and in the plane of their proximate edges, isarranged a hopper, 7o E, it being suitably supported in the standards BB. This hopper is divided into a num` ber of chambers by verticalpartitions in accordancexvith' the number of the characters embraced inthe sending capacity of the machine-say, for example, the Morsealphabet.

A number of levers, F., corresponding in number to the number ofchambers are pivoted near, their lower ends upon a rod, j, With theirlower ends held up to the hopper by S0 springs k. A rigid pin, l, issecured in the extreme end of each of said levers, and a movable pin,mi, carried by a spring, a, is passed through a hole in each of saidlevers above their pivots. These levers are operated by keys G, pivotedon the rod o, supported by the standards, the said keys engaging thelevers F, to move them upon their pivots j.

p is a stop-rod for the keys and levers, and the levers are alsoarranged in guide-stirrups q. rIhe key-levers G are provided with theusual characters.

The types or blocks H, bearing the telegraphic characters, are arrangedend for end in their particular chambers or compartments 9 5 in thehopper, as indicated by Fig. LI, each chamber holding a number of typesof a kind., These types or blocks are of suitable non-con ductingmaterial, with the characters r of conducting material arranged thereinlongitudi- Ioo nally, and extending entirely through them. They areretained in their chambers by the pins Z of the levers F.

The operation is as follows, viz: In transmitting a message a continuousrotary motion is imparted to the rollers C D when the circuit isestablished. Each letter or character to be transmitted is made by asingle depression of its key G, whether that letter or character betelegraphically designated by one or more dots, spaces, and dashesaccording to the Morse system, and the formation of the dots, spaces,and dashes is obtained as follows: Upon the depression of the key G, thelower end of the lever F is thrown away from the hopper, carrying withit the pin Z, thus allowing the descent of the lowermost type in thatparticular chamber, the superposed type being retained in thehopper bythe spring-pin m n. N ow, the released type is caught between theproximate edges of the rollers C D, and carried between them anddischarged from the machine through the opening .I into a suitablereceptacle. The roller D being pressed toward the roller C positivelyfeeds between them the types, so that said types are passed through at aproper rate of speed to insure the operation of the current. Thetype-body being of non-conductin g material, and its character onlybeing of conducting material, and fixed thereon and projecting throughthe body on both sides, such character portions will form electriccontact with the rollers C D of more or less prolongation and interval,according to their length and arrangement, and thereby transmit the dotsor dashes that may be on the type. The message so sent from thesepreviously-prepared types may be received by any of the instruments nowcommonly used.

A machine constructed and operating in accordance with my inventioninsures accuracy in transmitting messages, and does not require theservices of a skilled operator to the extent of the old system, whereaccuracy is dependent upon the facility of the operator in the use ofthe Morse key.

The hopper for the types may be made large enough to hold any desirednumber of types.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. A machine for sending messages telegraphically, composed of rotarycontact-surfaces arranged in a circuit, previously-prepared :fixedtelegraphic symbols or characters consisting of a conducting mediumexpressive of the symbols, or any of them, ar

ranged in a non-conducting body, and means to bring such symbols orcharacters into operative connection with said rotary surfaces,substantially as and for the purpose described.

2. In a telegraphic transmitter, an insulated grounded rotary conductorand a rotary transmitting conductor geared therewith, the two rotatingin opposite directions, combined with a superposcd hopper, andpreviously-prepared telegraphic symbols arranged therein, and means tobring said symbols to said conductors, one by one, as they are required,to form words, substantially as set forth.

3. The combination, substantially as shown and described, of the rotarycontact-surfaces placed in an electric circuit, a hopper containing aseries of compartments, non-conducting blocks or type containingelectricallyconductive telegraphic symbols or characters arranged insaid compartments systematically, a series of levers provided withholding and releasing devices for such blocks or type, and keyscorresponding with the symbols in each of said compartments, arranged tooperate the levers, as set forth.

4. The improved type for transmitting tel- NICHOLAS J. BISHOPRIGK.

lVitnesses:

ERNEs'r C. XVEBB, ARTHUR C. Ninnal

